警冲标设置规定

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警冲标设置规定

考点:信号工考试信号工技师信号工技师题库
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2011年8月,我国第二颗月球探测卫星“嫦娥二号”受控精确进入拉格朗日L2点的环绕轨道,如示意图所示.设太阳质量为M,地球质量为m,拉格朗日L2点与地球之间的距离为r1,太阳与地球之间的距离为r2.在拉格朗日L2点,太阳对“嫦娥二号”的引力与地球对“嫦娥二号”的引力之比为______.拉格朗日L2点距离地球约150万公里,北京测控中心发出的无线电指令需要经过______s才能够到达拉格朗日L2点(无线电信号在真空中的传播速度与光速相同).

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Students will need to use all of their skills in order to understand the reading selections in Reader’s Choice.

The book    36   many types of selections on a wide   37   of topics. These selections provide practice on    38    different reading skills to get the   39  of the writer. They also give students   40   in four basic reading skills: skimming, scanning, reading for   41  comprehension, and critical reading.  

Skimming involves reading quickly through a text to get an overall idea of its contents. This kind of rapid reading is   42 when you are trying to decide  43   careful reading is desirable or when there is not   44   to read something carefully.

Like skimming, scanning is also quick reading.    45   , in this case the search is more   46   .To scan is to read quickly in order to   47   specific information. When you read to find a    48   date, or number you are scanning. 

Reading for thorough comprehension is   49    reading in order to understand the total   50  of the passage.   51   this level of comprehension the reader is    52    to summarize the author’s ideas but has not yet made a critical evaluation of those ideas.  

Critical reading demands that a reader   53   judgments about what he or she reads. This kind of reedit   54   posting and answering questions such as “Does my own experience support that of the author?”, “Do I    55    the author’s point of view?” And “Am I convinced by the author’s arguments and evidence?

36.A.contains                B.uses                   C.put                    D.writes

37.A.sense                    B.variety               C.kind                   D.subject

38.A.making                 B.understanding     C.speaking             D.employing

39.A.message                B.secret                 C.content               D.nature

40.A.power                  B.point                  C.practice              D.opinion

41.A.better                   B.basic                  C.general               D.thorough

42.A.suitable                B.interesting          C.wrong                D.true

43.A.that                      B.if                       C.when                 D.why

44.A.interest                 B.habit                  C.time                   D.desire

45.A.Moreover             B.Anyway             C.However            D.Therefore

46.A.funny                   B.concentrated       C.perfect               D.important

47.A.deal with                     B.get in                 C.go over                     D.find out

48.A.common               B.different             C.fine                   D.particular

49.A.carefully               B.slowly                C.quickly                     D.perfectly

50.A.design                  B.explanation         C.meaning             D.feeling

51.A.To                B.On                     C.At                            D.In

52.A.impossible            B.able                   C.difficult             D.simple

53.A.makes                  B.finds                 C.puts                   D.offers

54.A.lacks                   B.requires              C.demands            D.affords

55.A.tell                       B.express               C.share                  D.argue

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菲德勒权变理论的主要观点是什么?该理论对组织的管理者有何启示?

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甚高频()频道是用于船舶和航空器之间进行协调救助作业通信或用于安全目的进行的航空器与船舶之间的通信。

A、CH16

B、CH13

C、CH06

D、CH70

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桑树的根系是由()、()、()、()组成。

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